MAGNETIC CORE FOR SIGNAL LINE FILTER

PURPOSE:To miniturize a device with the mounting height of a signal line filter decreased even in the case of plural-turn winding of a signal cable by forming a magnetic core to form a signal line filter into an elliptical ring. CONSTITUTION:A magnetic core 1 is formed into an elliptical ring, and the inner path 2 through which a signal cable 3 passes has such thickness and width that a line of signal cable 3 passes plural times. Since the inner path 2 is of elliptical form, the signal cable 3 can be wound by utilizing the side of the magnetic core 1 to form a plural-turn signal line filter 4. This design can decrease the height of mounting to electronic apparatus even in increases in turns of the signal cable 3 and miniturize a device.